Contact lens displays will replace the Google Glass




Contact lens displays will replace the Google Glass

contact lens

Especially for those who are shy to wear glasses digital Google Glass , researchers are developing an alternative in the form of contact lenses. They could one day replace screens of smartphones. Scientists have several institutions, including two research laboratories Samsung, developed electronic contact lenses based on nanomaterials. New materials will help to make the worn on the eye displays more practical, scientists believe.

A team of researchers led by chemical engineer Chang-Yong Park of the South Korean National Scientific and Technological Institute of Ulsan , built into standard soft contact lenses are light-emitting diode. This was possible thanks to the material developed by them – to the transparent, highly conductive and elastic connection of graphene and nano-sized silver threads, writes online edition of Technology Review.

Testing was conducted on rabbits lenses whose eyes are very similar in size to the human eye. During the five-hour test did not reveal any adverse effects. The experimental animals were not rubbed his eyes paws, there was no redness, electronics continued to work. The research work has been published in the scientific journal Nano Letters, published by the American Chemical Society on a monthly basis.

It should be noted that in this direction have been studied. For example, the Swiss company Sensimed developed special contact lenses for around the clock monitoring of intraocular pressure in glaucoma patients. Other researchers, including a University of Washington professor and founder of Google Glass Babak Parviz, have developed a display in the form of a contact lens. However, based on both devices lying rigid or opaque materials.

LED contact lenses

The park intends to make soft contact lenses and transparent with a functional wearable computer:

Our goal is to create a wearable display in the form of contact lenses, which according to its features and capabilities not inferior to digital points Google Glass.

This required a transparent, flexible material with high conductivity. Traditional diehard displays use a transparent conductor of a brittle compound of indium tin oxide, applied at high temperature, which is detrimental for contact lenses.

Although organic conductors, graphene and nanowires good bend and reflect light, they do not have sufficient conductivity.

Working as a team with scientists from the University of Illinois at Urbana-Champaign, Park found that the paving between the layers of graphene composite silver nanowires reduces the electrical resistance of the conductive material. An electrode obtained by coating the slurry on a rotating surface of nanomaterials at a low temperature, different elongation and high permeability for the light (94 percent).

Researchers from the laboratory Samsung helped them to cover a flexible contact lens electrode, and then put it on the LED. Call the resulting display is still too early, though, because it has only one pixel, but it is likely that the material developed in the future will be used for the production of so-called contact displays, says Prof. Herbert De Smet from the University of Ghent (Belgium), did not participate in this paper.

The authors of the study believe that electronic contact lenses are much more promising the same virtual points . Photography and videography using contact lenses is no longer a fantasy.
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Tags: Google Glass , Samsung , Flexible Displays , Grap


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